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Permanent link (DOI): https://doi.org/10.7939/R3D10X

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Lithospheric structure imaging of Alberta from regional broadband seismic network Open Access

Descriptions

Other title
Subject/Keyword
receiver function
lithospheric structure
seismic tomography
crustal structure
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Chen, Yunfeng
Supervisor and department
Gu, Yu Jeffrey (Physics)
Examining committee member and department
Currie, Claire (Physics)
Sacchi, Mauricio D. (Physics)
Chow, Kim (Physics)
Department
Department of Physics
Specialization
Geophysics
Date accepted
2014-09-22T11:49:31Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
The development of dense, broadband seismic network provides a solid foundation for the implementation of a variety of seismic imaging methods. The integration of receiver function method and finite-frequency traveltime tomography offers high-resolution images of the crust and upper mantle structures in Alberta. The shear velocities from receiver function modeling provide compelling evidence for a crustal low velocity zone beneath the central Alberta. The P velocity model of the upper mantle recovered from body-wave traveltime inversion reveals 1) a well-defined Cordillera-craton transition coincides with the Cordillera deformation front, and 2) Archean-aged cratonic lithosphere under Medicine Hat Block and Loverna Block. These findings contribute to better understandings of the tectonic structure and evolution history of western Laurentia.
Language
English
DOI
doi:10.7939/R3D10X
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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